Finding the Fourth Proportional to 81,468,277.20, 122,202,415.80 and 72,398,350.80
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Solution
The fourth proportional to 81,468,277.20, 122,202,415.80 and 72,398,350.80 is: 108,597,526.20
Step by Step Solution
- Step 1: Write the proportion equation
81,468,277.20 : 122,202,415.80 = 72,398,350.80 : x - Step 2: Convert to fraction form
81,468,277.20/122,202,415.80 = 72,398,350.80/x - Step 3: Cross multiply
81,468,277.20x = 122,202,415.80 × 72,398,350.80 - Step 4: Simplify right side
81,468,277.20x = 8,847,253,367,695,862 - Step 5: Solve for x
x = 8,847,253,367,695,862/81,468,277.20 - Step 6: Final answer
x = 108,597,526.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.